[MID] Implemented Bloodthirsty Adversary

Mage/src/main/java/mage/abilities/effects/common/DoIfAnyNumberCostPaid.java

@@ -0,0 +1,69 @@
+package mage.abilities.effects.common;
+
+import mage.abilities.Ability;
+import mage.abilities.Mode;
+import mage.abilities.costs.Cost;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.players.Player;
+
+public class DoIfAnyNumberCostPaid extends OneShotEffect {
+
+    private final Effect executingEffect;
+    private final Cost cost;
+
+    public DoIfAnyNumberCostPaid(OneShotEffect effect, Cost cost) {
+        super(Outcome.Benefit);
+        this.executingEffect = effect;
+        this.cost = cost;
+    }
+
+    private DoIfAnyNumberCostPaid(final DoIfAnyNumberCostPaid effect) {
+        super(effect);
+        this.executingEffect = effect.executingEffect.copy();
+        this.cost = effect.cost.copy();
+    }
+
+    @Override
+    public DoIfAnyNumberCostPaid copy() {
+        return new DoIfAnyNumberCostPaid(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller == null) {
+            return false;
+        }
+        String costText = cost.getText();
+        int timesPaid = 0;
+        while (controller.canRespond()) {
+            cost.clearPaid();
+            if (cost.canPay(source, source, source.getControllerId(), game)
+                    && controller.chooseUse(
+                    outcome, "Pay " + costText + "? You have paid this cost " +
+                            timesPaid + " time" + (timesPaid != 1 ? "s" : ""), source, game
+            ) && cost.pay(source, game, source, source.getControllerId(), false)) {
+                timesPaid++;
+                continue;
+            }
+            break;
+        }
+        if (timesPaid > 0) {
+            executingEffect.setValue("timesPaid", timesPaid);
+            return executingEffect.apply(game, source);
+        }
+        return false;
+    }
+
+    @Override
+    public String getText(Mode mode) {
+        if (staticText != null && !staticText.isEmpty()) {
+            return staticText;
+        }
+        return "you may pay " + cost.getText() + " any number of times. When you pay this cost one or more times, "
+                + executingEffect.getText(mode);
+    }
+}